Trackball
The Trackball is a crosshair cursor that locks onto the nearest data point as the user moves their mouse over a Cartesian chart. It displays a tooltip showing the precise value at that point. Only available on Cartesian chart types, configured in the General Design step.
Difference from Tooltip: A tooltip shows a static info box when hovering over a specific point. The Trackball continuously follows mouse movement across the chart and locks onto the nearest data point at each position.
How to Access
- Navigate to the General Design step in the wizard.
- Find the Trackball section.
- Enable Show Trackball.
Parameters
| Field | Description | Default |
|---|---|---|
| Show Trackball | Enables or disables the trackball cursor. | Off |
| Activation Mode | How the trackball is triggered: hover (on mouse over) or click. | hover |
| Display Mode | Visual style of the trackball cursor. | — |
| Line Color | Color of the trackball crosshair lines. | — |
| Line Thickness | Thickness of the trackball lines in pixels. | — |
| Tooltip Background Color | Background color of the trackball tooltip box. | — |
| Tooltip Text Color | Text color of the trackball tooltip. | — |
Tips
- Trackball and Tooltip can be used simultaneously, but one is usually sufficient.
- Trackball is especially useful on time-series charts — it lets you compare values across multiple series at the same moment.
- Use it together with Zoom & Pan for large datasets: zoom in first, then use the Trackball for precise readings.